Circuit Description
The TP sensor is a variable resistor that monitors throttle opening. The ECM determines vehicle driving condition and adjusts air/fuel mixture accordingly. DTC is set when ECM consistently detects less than .1 volt or 4.9 volts or more on VTA circuit. Possible causes are:
- Open or short in TP sensor circuit.
- TP sensor.
- ECM.
NOTE:
If DTCs P0105, P0106, P0110, P0115 and P0120 are output together, sensor ground circuit may be open. Repair as necessary. See appropriate wiring diagram in WIRING DIAGRAMS
article.